Slow-closing valve.



PATENTED MAY 21, 1907/ o. J. moms, JR. 6 R. 2. 01mm.

SLOW CLOSING VALVE.

APPLIOATIOH FILED JUNE 28, 1904.

anvenl'ow;

UNITED STATES PATENT OFFICE.

OSCAR J. BAOKUS, AND RAYMOND E. CRANE, or OAKLAND, CALIFORNIA.

- SLOW-CLOSING- VALVE.

Specification of Letters Patent.

Patented May 21, 1907.

Application filed June 28,1904. Serial No. 214,671.

. and RAYMOND E. CRANE, citizens of the United States, residing at Oakland in the county of Alameda and State of California,

have invented a new and useful Improve ment in Slow-Closing Valves, of which the following is a specification.

Our invention is forthe purpose of providing a suitable mechanism wlnch will provide a predetermined length of flow of water upon each operation of the device.

The invention is principally for use in flushing water closets and other sanitary fixtures by the direct method, that is to sa by admitting the flushing water directly" rom the supply pipe under ressure of the -street main, without the emp oyment of the usual storage tank or reservoir.

Our invention comprises a diaphragm which is retarded in its movement in one dichamber, and a valve rection bya timin which is controlled y the movement of said diaphragm. The movement of the .diaphragni is caused by an operating lever the water pressure helping 1n the operation of the device.

The invention can be readily understood by reference to the following detailed description'and the accompanying drawing'in which, I

Figure v1 is a vertical sectional view of a simple form of the invention. Fig. 2 is a vertical cross section on the line AB of Fig.

1; Fig. 3 is a vertical cross section on part of the line CD, showing the construction,

of the stem 12 and the three-winged guide piece 14.

Similar numerals refer to similar parts throughout the three views.

The water enters the device through the inlet 1, and when the valve is opened it passes through the seat 21, and out through the outlet of the device 2. The valve is opened by means of the lever 5 which is on the outside of the device, (and which is) bent at a pro per angle and enters the device through a suitable packing box, formlng an axle into which the inside lever 6 is screwed. The passage 17 connects with a constantly open timing vent in'the diaphragm and provides means for the water to enter the chamber 3 from the inlet 1. The water passing through this passage must pass through a tapering outlet 2 of the device.

slot in the screw 22 (which is screwed in the washer 16) before it can entelxthe chamber 3. This screw 22 is so slotted that screwing the screw farther in makesthe assage smaller and thus provides means of adjustment of the amount of water passing through the passage thereby regulating or timing the period trated in Fi 2 whichshows how the main valve is guided to its seat and how the water passes through the guide. Fig. 2 also illustrates the stem 12 which passes through this-guide; Fig; 3 shows how the upper end he stem 12 of the relief valve strikes a of this stem 12 is guided inside of the piece 14. In this way the opening of the relief valve or itsmovement to the right permits the waterin chamber 3 to (run) through the passage 15 through the main valve into the The main valve is composed of the diaphragm washer 18 and the leather valve 19 and whichcloses against the seat 21. As the lever 6 engages a slot in the stem 12, the entire device can be operated by means of the outside lever 5. The pieces 30 and 32 with the washer 3 1 are a sim ple ordinary union for convenience in setting u the device. The screws 35 and 35 are orv use in clamping the diaphragm in place.

As shown in the drawing the valve is closed. The water pressure in timing chamber 3 is the same as in the inlet 1 as the water is always free to enter through passage 17. At the commencement of the opening movement, that is when the lever 5 starts to rise, the relief valve 10 opens and releases the pressure in chamber The water pressure in the inlet part of the valve then pushes the diaphragm to the ri ht {LIN-1415818138 in the opening movement of the valve. When the lever 5, which has a heavy handle, is let go of,

the weight of the handle first closes the relief valve 10. The water cannot enter the chamber 3 except through the passage 17. As the water enters the chamber 3 slowly,

the closing of the main valve is retarded and the speed of closing can be determined by adjusting the screw 22.

1 same as in the inlet 1.

Of course the 5 cannot close the main weightifof the lever valve until the water pressure accumulates" on the right hand side of the diaphragm thus balancing the pressure phragm.

' In this construction we believe we have advantages over any previous construction as the lever 5 can be used to close the device in case of failure of any parts inside or the leak: age of any part. The device works entirely without springs which are likely to lose their strength in long wear. The valve 10 is guided entirely by the main valve and is kept in perfect alinement true.

The construction ,theb eration is as iollowsl The passage 17 and t \e timing vent in the diaphragm being constantly open, the chamber 3 is normally full of water and the pressure therein is the actuated to open the main valve 24, the first part of the movement 0 ens the relief valve 20 by the e agement o the shoulder 13 on the rod 120 the relief valve with the guide piece 14 of the main valve, thereby immediately reducing the; pressure in the timing chamber, and permitting the di aphragm to be easily moved so-as to open'the main valve 24, which movement is assisted by the pressure reponderating at this time in inlet 1. hen the handle is released, the relief valve is instantly closed, and the shoulder 40 on the stem 12 contacts with the piece 14 on 'the main-valve and tendslto close that valve also. The preponderating pressure in'the inlet 1,

- however, prevents the main'valve from closing until sufficient water has passed into the timing chamber through the passage 17 and the timing vent to raise the pressure therein so as to counterbalance that in the inlet. When this occurs, causes the main valve to close, and it is to be noted that this closure is gradual as the water passes from the inlet into the timing chamber. It is also to be noted that though more promptly the automatic closing of the main valve through the intermediacy of the weight of the this valve maybe closed by. forcing'thehandle down by hand, and that, in any event, the lost'moe tion connection between the stem of the re? lief valve and the main valve permits both.

valves to be operated positivel by, the handle. The time that is re uire for the main valve to close automatica ly is re lated entirely by the screw 22 in the timing vent which canbe adjusted so as to admit more or less water into the timing chamber 3. The adjustment of after the fixture has been installed by taking ofi the cover of he timingchamber, audit is to be furthermore noted, that the removal of this cover also permits the removal of the against the dieso that it is sure to seat being as thus described,

When the handle 5 is 4 main valve, and guide guide said main valve in its movements,

valve being also guided by the weight of the handle tion therewith, where lief valves are actuated, an'operatmg lever the screw is easily effected diaphragm andboth valves, so that these parts may all be repaired or replaced when required.

We do not limit ourselves to all the details as shown in the drawing but We do claim as new and desire to seeureby Letters Patent, the following 1. In a slow closing valve for flushing water closets and the like, a timing chamber, a flexible and movable diaphragm separating the same from the inlet passage and having an open timing vent therein, a main'valve carried by the diaphragm and controllingthe flow of flushing water through thevalve, a relief valve also carried by the diaphragm for reducing pressure in the timing chamber preliminary to opening the main valve, the stem of the relief valve passing through and having a-lost motion connection with the main valve, an operating lever on the outside of the valve casing, 'and connections between the same and the relief valve stem, whereby both valves may be positively operated inboth directions.

2. .In a slow closing valve for flushing water closets and the like, a timing chamber, a flexible and movable diaphragm separating the same from the inlet passage, a mam valve carried by the diaphra m and controlling the flow of flushing water throu h the valve, a relief valve also carried by the diap'hragmfor reducing pressure in the timing chamber preliminary to opening the main valve, the stem of the relief valve passing axially through the vents or wings on the. main valve coactmg with the valve orifice lto t 1e stem of the relief the vents or win s on the main valve.

3. In a .slow 0 osingvalve for flushing water closets and the like, a timing chamber separated from the inlet passage by a flexible and movable diaphragm having an adjustable timing vent therein, a removable cover for the timing chamber, a main valve carried by the diaphragm and controlling the flow of flushing water through the valve, a relief valve also carried ducing pressure in the timing chamber dpreliminary to opening the main valve, sai relief valve stem assing axially through the main valve, and havin a lost motion connec-' y both main and rethe valve casing, and'disconon the'outside of nectible connections betweenfthe lever and the relief valve stem, whereby on removing the cover of the timing chamber. the timing vent Ina be adjusted and the operating parts of t e valve may be removed. I

4. In a slow closin valve for flushing water-closets and. the ike, a timing chamber having open communication with the inlet pipe through a regulable filling vent, a' fi\exib e and movable diaphragmseparating' by the diaphragm for rethe timing chamber from the inlet, a main,

valve carrled by the diaphragm and controlling the flow of flushin water directl from the inlet pipe to the out et pipe, a relief valve also carried by the diaphragm for reducing pressure in the timing chamber preliminary to'opening the main valve, the stem of the relief valve passing through and havin 'a lost motion connection with the main va ve, an operating lever on the Outside of the valve casing, and connections between the same and the relief valve stem whereby both valves may be positively operated in both directions.

5. In a slow closlng valve for flushing water-closets and the like, a timing chamber havin open communication with the inlet pi e t rough a regulable filling vent, a vertica ly arranged flexible and movable diaphragm separating the timin chamber from the inlet assage, a rerhovab e cover for the timing 0 amber, a horizontally operating 7 main valve carried by the diaphragm and throug the main valve and having a lost motion connection therewith, whereby both main and relief valves may be positively aotuated, a horizontally arranged weighted operating lever on the outside of the valve casthe diaphragm for reducing pres .stem assing horizontally and centrally ing, and disconnectible connections between a the shaft of the lever and the relief valve stem, whereby on removing the cover of the timin chamber the timing vent may be adjuste and the operating parts of the valve may be removed. O. J. BACKUS, JR. R. E. CRANE. Witnesses: g

FREDERICA F sonER, 'Mrs. S. E. CRoNE. 

